Weather Underground currently uses a network of about 19,000 personal weather stations across the USA and 11,000 elsewhere on the planet to provide accurate local forecasts. Now the service will ask users to report and verify weather events through a simple interface, and other users can view conditions that were observed within 10 miles of their location.

The Weather Underground weather map -- aka "WunderMap" -- has always featured a number of layers that can be turned on or off, including precipitation, temperature, wind, radar, cloud cover and more. The crowdsourced information now appears on a separate layer.

The app also adds a landscape mode, more interactive graphs showing data trends, history and forecasts, more webcams and access to weather-related videos. As before, the Weather Underground app is available for free from the App Store.